Reciprocating sleeve-valve.



s. T. ALLEN. lREOWRocAmm SLEEVE- VALVE.

APPLICATION FILED NOV. 16. i916.

Patented Feb. 26, 1918.

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nmved from the engine cylinder.

1b all whom z't mag/concern:

'Hi liB'e :it known that' I, SHERMAN T.. 'ifa 4itiaen of lthe vUnited Los-'Angeles,"in the county of Los Angeles and useful Improvements in Reciprocating peciication.

vzlr1E-This invention relates to areciprocat'ing sleeve valve. for internal 'combustion engines and `articularly pertains to a valve of the slide le'telescoping sleeve type.

'2 Itis desirable'in valves of the above type I ,fthtfthe inner and 'outer telescoplng valve 'fliie'inbers' resilientlygrip each other -so as to nfen'ra close sliding joint therebetween andv ,lalsfthat the" outer valve' sleeve yieldably l eiitact'an encircling cylinder wall-with both sleeves adapted to expand and contract with temperatureswithout binding. .'lo ifectthe fore o ing stated results it has been VEfdesiijab et() split .the .sleeves longinal1y"'a'nd to so form the inner sleeve' whenit is placed within the outer it Will' exert an .outward pressure thereon -t expand it against theA cylinder .forlyA the sleeves, vsuch as to permit oftheir beingl properly Ilubricated without danger of 'the lubricating oil L escaping. .in excessivev @may ina-ih@ 45 engine cylinders. E 'l A.. further .object is to provide 'meansfor actuating-thesleeve valves from. their upper .ends andv from ai point above the he -aceo'mpanying 'drawings ve* .valves as assembled fand as "re- .mslm-,fawn ma.. y.

States, residing at.

Fig. 6 is' a detail horizontal section as l1. jgjIt has been found 'thatsuchsplit' 'cylinder 9.and has its outer wall spaced from .the inner wall of the latter. A' cap plate-13 t distortion or twisting due" It-is the object.

.the Cap Another`cbject is-to .provide a mounting water-cool the latter. formed with an opening lwhich communi-y l 12. The sleeve SHERMAN fr. ALLEN,y or Los nEoIPEoCAzrING sLE'EvE-VALvE.

ANGELES, CALIFORNIA.

Specication of Letters Patent. Patented Feb. 26, 1918. n I Apmieaun med November 1s, 191e. serial No. 131,762.

Fig. 2 is a view in vertical on the line 2 2 of Fig. 6.

Fig. 3 is a view in rear elevation opposite that shown in Fig. 1 and as seen in .the direction indicated' by the arrow -3- in Fig. 6.

Fig. 4 is a view in sectionand elevation section as seen 'illustrating the valves as applied to .an engine casing and illustrating the valve as seen in the vdirection indicated by the arrow f1- in Fig; 1.

Fig.3 5` is a detail in perspective. of the' telesc'zlopingl sleeve valves,.with parts broken away, showing the construction and. arrangement yof the splits therein.

seen onvthe line 6-6 of Fig. 1.

ore specifically, 7 indicates an engine casing of any suitable construction formed with the usual .engine cylinder 8 to receive the engine piston. In carryingA out the pres- 7 ent invention the casing 7 is formedwitha vertical cylinder 9 above the piston cylinder 48 open at bothfends and communicatin at its lowerlend withv the piston cylinder. upper edge of the cylinder 9 is .formed with a. channel 10` to provide a seat for a ange .1 1 formed on a removable cylinder head 12,

which head projects downwardly into the.

covers 4and is secured to the engine lcasing and extends over the cylinder'head 12; the

lcylinder head being secured to the cap plate 13 by means of'a threaded stem 14.formed on the cylinder head, which proJects through plate to receive a nut 15 which, when screwed on the stem 14, servesvto tightly- 'clamp the cylinder head against the uder sidefof the cap plate. The cap plate-is Yformed with a water space which opens to the interior of the cyllnder head so as to.'

The .cap plate-13 is cates with a chanihei'l7 leading to the cylinder .9 through the side wall there-of, the- 1 .opening 16 and cl'fainber 17 being provided pitman rods 18 `and 19 which connect 'with separate Wristpins "or" cranks on Aa suitablel drive shaft carried onv thecap plate and which pitmanrods extend 1 downward into then'chamber 17 and "are toireceive a pair of 1pivotally connected 't6 inner andl outer sleeve valves 20fand 21 mounted in the s acebe-V tween vthe cyli`nder'9 and the .cylind3 valves-20 -and- 21' are 'each- 11 er head parallel. circumferentially extending shou 'there is sleeves on opposite sides of the slits to move ers adalpted to coperate with each other to prevent ongitudinal distortion of the sleeves on len hwise pressures being im osed thereon. his is 'important inasmuc as it has lbeen found that in reciprocating split sleeves a tendencyfor the portions of the in opposite directions, thus warping the sleeves and causing them to bind. In order to prevent movement of the portions of the sleeves on oppositesides of the slits in either direction, a tongue is formed on one ed e portion to extend into a correspondin cset in the adjacent portion. The shou ders and ton e, while holding the sleeves 'against longitu al distortion, permit of their ex- Ianding and contracting circumferentially. l his zig-zag construction of the splits also serves to prevent the leakage of gas therethrough-and fa 'litates 'packing the sleeve valve as will be ater described.

The sleeve valvisl are formed with 'suit-l able intake and exhaust ports 26 and 2f( which are adapted to register, 'on reciprocating the sleeves in relation to each other, as is common in sleeve valve construction. The cylinder head 12 extends' downward to a4 point `adjacent the lower ends of the sleeve valveswhen'in theirlowermost posi- Vtion' and its lower portion -is formed with ports28 and 29 adapted to v.register with the ports 26 and 27'; the ports 28 and 29 being formed below va partition Wall 30'formed in the c lnderhead. The lower end of the cylin er head is threaded internally to re- ,oeive a collar 31 having an annular Hangs' e 32,- which fiange is adapted to seat on t marginal edge of the lower end of the cylinder 9 so aste effectively 'closethe lower end of the space between the cylinder 9 and the depending portion of the cylinder head 12 and prevent the excessive passage of oil, employedinlubricating the sleeve valves, tothe piston cylinder.

In assemblin the valve, the sleeve valve inthe sleeve valve 21w1th4 in 4relation to each other,-

20 is 'placed wit the splits offset the inner sleeve valve expanding within the outer sleeve valve to eifect a close slidin fit therebetween. The sleeve valves are ten positioned on the cylinder head 12 and then disposed within the cylinder9,' or ma be placed within the cylinder 9, after w ich thecylinder head will be-disposed therein. The cylinder head is rings 33 and 34'arranged on oppositev sides of the ports 28l and 29, whichffrings bear against the inner wall of the inner sleeve 'fnlve and serve to pack the space between l Y, e

provided with packing` the inner-.sleeve valve is reciprocated, the

circumferential portion of the slitwill not move off the packing ring.v This eectively prevents the escape of gases between the inner sleeve valve and the cylinder head.V

After the'sleeve valves are ositioned in the cylinder 9 around the cy inder head, the collar 31 is set in place and the cap plate 13 mounted on the engine casing; Connections 1 between the sleeve valves and their ,respective operating mechanism mayl then be effected.

The cylinder 9 is formedwith suitable intake and exhaust ports not necessary to be here shown, but which are positioned opposite the ports in the cylinder head.

I claiin:

LIna reciprocating sleeve valve for` explosive engines, the combination with an engine cylinder within which a piston is adapted vto reciprocate, of a valve head for-med above said cylinder and through which a valve cage is formed, a tubular reciprocating valve'sleeve slidably positioned within said cage and adapted to bearagainst the cylindrical wall thereof, a second tubular valve sleeve slidably `mounted Within,v said first sleeve, ports formed through the l walls of said sleeves and upon opposite sides, said rts arranged 'to alternately register, a cyiiiider head adapted to close the upper end of the valve cage and formed with a cylindrical extension projecting into the valve sleeves and adapted toprovide a guide therefor, and a cylinder head collar detachably mounted in the lowerend of said head and adapted to hold thevalve members within the cagev and to Seal the valve sleeve passageway thereof.

2. In a reciprocatingsleevevalve for enines, comprising a valve cage having a oyindrical bore therethrough, a tubular core positioned within said here and adapted to loo iin

f orm an annularv valve channel, said core having anfupper f lange adapted'to seal the bore of .the cage atits upper end, a removable flanged collar adapted `to be attached to the core and seal the bore at its lower end, a pair-of tel :oping valve sleeves disposed laround'eaid core and within the iinnular valve channellports formed through t opposite-"- sides of eH core, ports formed through opposite sidesof4 the valve sleeves..

and an actuatinginechanism whereby the'v ports throughlthe opposite --sides of the sleeves will alternately register with ports throu 'opposite sides'of the core. 3. n a -reciprocatin ndrical boretherethrough, a tubular -core positioned within said bore and4 adapted to sleeve valve for en 4ginas, comprising.- ava ve cage having a cyiio vform la pair of telescoping ating mechanism an annular valve channelyjsaid core having an upper flange adapted to seal the bore of the cage at its up er end, a removable {langed collar adapte to be attached to the core and seal the bore at its lower end, valve sleeves disposed around. said core and within the annular valve channel, ports formed'through opposite sides ofthe core, ports formed through opposite sides ofthe valve sleeves, an actu-` whereby the ports through the opposite sides of the sleeves will alternately register with ports through opposite sides of the core, and piston rings positioned within channels formed around the core and upon opposite sides of the -ports therethrough, said rings being adapted to expand against the inner valve ve.

In testimony whereof I have signed my name to this specification.

SHERMAN T. ALLEN. 

